The quick way to find a local Cellar & Basement Conversion specialist in Watford

LDN Construction

Cellar & Basement Conversion

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Welcome to LDN Construction! Based in London, we specialise in transforming houses into homes, offering a wide range of construction and refurbishment services. With over 20 years of experience, we combine precision, innovation, and top-quality materials to bring your vision to life. We pride ourselves on our attention to detail and commitment to completing projects on time and within budget. Our Services Include: - Home Extensions (Rear and Side) - Loft Conversions - Roofing - Full Home Refurbishments - New Builds - Bathroom Renovations - Garden and Patio Projects - Driveways - Fencing - Cladding and Rendering - Plastering Every project is important to us, whether big or small. We offer a bespoke quality finish and are always by our customers' side, turning their houses into homes. Don't hesitate to contact us for a free visit and a free quote. We look forward to hearing from you soon!

DC LOFTS & CONSTRUCTION LTD

Cellar & Basement Conversion

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DC Lofts & Construction Ltd is a London-based construction company specialising in loft conversions, roofing, structural work, renovations, and full property improvements. We deliver reliable, high-quality workmanship with attention to detail from start to finish. Our services include new roof construction, structural alterations, loft conversions, partition walls, flooring, plastering, painting, doors, skirting, fascia, guttering, and exterior finishes. We work closely with homeowners to complete projects safely, professionally, and on time. We pride ourselves on clean work, strong communication, and practical solutions that add value to every property. Whether it’s a full loft build or general construction work, we focus on durability, quality finishes, and customer satisfaction.

EcoHeights Roofing & Building LTD

Cellar & Basement Conversion

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⭐⭐⭐⭐⭐We are a family based company with years experience we thrive to be the best and trusted roofing and building company in London with or team haveing there training with some of the top schools in London you know for sure your getting the best at a reasonable cost every time with every project .⭐⭐⭐⭐⭐

Latest homeowner review

Reviewed by Daniel on 28/4/2026

Tani Dauti Building Services

Cellar & Basement Conversion

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I have over 25 years experience in the building service.

Eland Property Developments LTD

Cellar & Basement Conversion

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We specialise in Commercial Groundwork & Residential extensions. This includes: Structural Underpinning, Retaining walls, Trench foundations, metal reinforced concrete walls & floor slabs, Garage and Basement conversions,

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Reviewed by Tania on 1/4/2022

Andrew from Eland Construction left us with a very good impression, sadly we had to postpone the job for personal reasons, but he was very knowledgeable and left us a feeling of trust right from the start. He did listened to our needs and understood perfectly well the proyect we had in mind. I will call him again.

Simicus Construction LTD

Cellar & Basement Conversion

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This is Simicus Construction Ltd, we are a team of builders with over 20 years of experience in the Construction Industry.

London City Roofing & Renovation

Cellar & Basement Conversion

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London City Roofing & Renovations ltd is an established and trusted company with over 20 years experience, offering all aspects of roofing and building services. We are based in Wembley (London) serving all of London and surrounding areas within 100 miles.? We pride ourselves on our punctuality and quality workmanship, offering a prompt and professional service with experienced and expert staff. We guarantee a friendly, clean and tidy service with all work being to the highest standard. We are fully insured and all work is guaranteed. All our tradesmen are experienced and qualified in their respective trades. We specialise in the following: Roofing services: UPVC Fascias & Soffits Cladding Guttering Bargeboards Flat Roofing Chimney Repairs Tile & Slating Work Re-Roofs Lead Work General Building Work Fibre Glass Roofing Double Glazing Building services: Home improvements Kitchen Fitting Bathroom Fitting Extensions Loft Conversions Garage Conversions Bricklaying Plastering Comprehensive driveway and paving service, including: Driveways Drop Kerbs Patios Paths Block Paving Concreting Tarmacing Car Port We offer free quotes

Latest homeowner review

Reviewed by Richard on 22/11/2024

John and the team did an outstanding job. It was easy to work with John and he was very knowledgeable, and provided very sensible advice. Other people quoted work which was over-the-top or wouldn't have solved the problem but John got right to the issue in a no-nonsense way. Quality of the work undertaken was very good, considering the age of the building and complexity. Would recommend.

PMH Construction

Cellar & Basement Conversion

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Founded in 2004 PMH Construction is now located in Milton Keynes with premises in St Albans, we cover all surrounding areas. We are members of the federation of master builders, specialising in providing a number of building services to both existing properties and new builds. As established builders in Milton Keynes, we pride ourselves on our experience and quality of our workmanship.

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Reviewed by NIGEL on 9/3/2017

Pat and his team have done an excellent job. We are very pleased with the result. There has always been clear communication and timely project management of the build. The team have always been helpful and responsive, with real care of the quality of the work done and attention to detail. Pat has always strived to minimise the impact to us and neighbours whilst the work has been done. We can highly recommend PMH based on our experience.

Electro Flame LTD

Cellar & Basement Conversion

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ElectroFlame Ltd is an Electrical, Plumbing & Gas safe service. We offer FREE Advice and Quotations. Our company provides affordable, discount prices including Bundles to meet the demands & needs of all our customers no matter what the criteria may be. Customer Satisfaction is key & we strive to build trust based and long term relationships with all our customers.

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Reviewed by Michael John W on 13/5/2026

Quick. pleasant sensible price. Strongly recommend

Rivers & Building Services

Cellar & Basement Conversion

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My name is Dean. I am a good reputable builder. I am a bricklayer & roofer by trade. I am reasonable on price but we don't cut quality we only use the best materials.Being a general builder I offer all services , roofing, brickwork , groundwork, fencing

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Reviewed by Al on 11/7/2024

We are very pleased with the work that was done. There was a quick response to the job that day via a telephone call. An appointment was scheduled for a couple of days later and the work was started early that day & completed that same day. The workers were on time, polite, knowledgeable and proficient. They promised to make a visit a week later to remove the supportive structure and did exactly so yesterday. I am very pleased with the work and their professionalism.. i highly recommend them. Well dodone

Next Level Construction

Cellar & Basement Conversion

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Nextlvl Construction (London) We carry out renovations, extensions and building work across London and nearby areas. We’ve been trading for 7+ years. We focus on jobs being: properly planned kept tidy finished to spec done with clear pricing and communication What we do: Extensions & conversions: lofts, basements, garages Renovations: full refurbs, layout changes, structural work Kitchens & bathrooms: rip-out to finish, including plumbing and electrics Carpentry & joinery: fitted units, doors, stairs, custom work Roofing & exterior: flat roofs, fascias, soffits, cladding Finishing: plastering, tiling, flooring, painting and decorating Security & tech: CCTV, alarms, AV installs Cleaning: post-build and end of tenancy How we work Written quotes with a clear breakdown Realistic timelines and updates as the job progresses Site kept tidy and waste cleared Building regs considered from the start Snagging handled properly before sign-off If you’re planning work, we can take a look and provide a free quote. - Fully insured. - References available. - Before and after photos of recent work available on request. - We can work to drawings or help you plan the build. - We’re used to working in occupied homes.

P&A Renovations Ltd

Cellar & Basement Conversion

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We are a team of building professionals with over 10 years' experience in the construction and renovation of commercial and high end residential properties. We pride ourselves on ensuring customers are completely satisfied with not only the finished project but also the process. This means our customers are usually recommended to us by friends and existing clients. As a result, we have more and more customers returning to use our services. We value attention to detail and take pride in our ability to listen closely to our clients to deliver premium construction projects to your total satisfaction.

Latest homeowner review

Reviewed by Susan on 8/10/2024

Petre and his team were exceptional. He was able to complete the entire job including plumbing, complex fitting of worktops and three sided breakfast bar, splashbacks and hardwire electric installation in just three days and to a brilliant standard. The company is super responsive to emails and nothing is too much trouble. They are great at problem solving and the finish is first rate. Polite, tidy, skilled, talented and efficient, he double checked every detail with me so we got what we wanted. Delighted.

Daniel the Handyman

Cellar & Basement Conversion

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Handyman with qualifications in plumbing and electrical works. Small quotes as the company is only a toddler and needs feeding to grow.

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Reviewed by Stella on 4/6/2023

Daniel came within 24 hours to build a cat flap through a wall. Lovely chatty guy - very helpful - even drove me to pick up an extra extension for the tunnel we needed to create. Thank you!

Construction London

Cellar & Basement Conversion

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WELCOME TO CONSTRUCTION LONDON We offer our services throughout , Essex and East and south London. Construction has a wealth of building and construction experience including , extensions, renovations, restorations, and more, we are happy to do bigger project of paint one room and Our team has a solid foundation of highly skilled devoted and dedicated tradesmen you can trust. We all strive for perfection. We offer an affordable, reliable and high quality service with specific attention to detail resulting in clean and precise work. Our team ethos is to continue to deliver these high standards to each of our clients, from the initial meeting right through to the completion of a project

Latest homeowner review

Reviewed by Jeremy on 11/12/2020

Alex did a fantastic job redecorating my flat. His communication was excellent, he got everything finished on time, he made helpful suggestions of things that needed doing. Highly recommended.

DD BUILDING AND LANDSCAPING

Cellar & Basement Conversion

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Professional & Affordable Building & Landscaping Services We've been experts in building and landscaping projects since 2013, ensuring reliability and excellence in every service we provide. We offer a wide range of professional services tailored to meet your specific needs. Whether you require comprehensive building solutions such as refurbishments, kitchen services, flooring, and porch services, or meticulous landscaping services including wood decking, driveways, astro turf, patios, and fencing installation, we've got you covered. With a proven track record of delivering excellence since 2013, and with our fully insured services, you can trust that your project is in capable hands, ensuring exceptional results every time. With us, you can relax knowing that your work is in good hands. We prioritise reliability and transparency, offering you peace of mind throughout the entire process.

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Reviewed by Victoria on 18/11/2025

Property DMR Ltd

Cellar & Basement Conversion

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Property DMR Services Ltd is a high end building company that specialises in refurbishing properties in and around London. All our work is insured & guaranteed. We undertake Basement Construction & Waterproofing, Extensions, Loft Conversions & Renovation plus Bespoke Joinery & Shop Fitting

Latest homeowner review

Reviewed by Esther on 8/5/2024

Matthew and his team did an amazing job and completely transformed a tired 1st floor maisonette into a luxurious looking property. Throughout my 'mini' project Matthew remained calm and patient, even when i informed him that i preferred to have my Gas Safe Engineer to work on the Plumbing and Gas boiler. he just adjusted his quote reflect this. He also suggested 2 weekly installation payments so that I could see the improvements before paying. I will definitely use Matthew again for any future projects.